Legacy Framework Mapping

The legacy Well-Architected Framework was organized around three capabilities — Trusted, Easy, and Adaptable — each with its own sub-pillars. The current framework reorganizes that guidance into five pillars. This page maps each legacy sub-pillar to the single file where its guidance is now most directly addressed, so you can jump straight from an existing concept to its current home.

Each destination links to a live page. The new framework splits several sub-pillars across more than one pillar, so we link the primary (most-addressed) home and call out any secondary homes in the notes.

Sub-Pillar	Now Most Addressed In	Notes
Secure	Trust	Organizational, session, and data security; expanded with Agentforce agent-user authentication and data exposure.
Reliable	Reliability	Availability and scalability; adds Scale Center. Performance optimization and some aspects of data-lifecycle move to Resource and Cost Optimization; monitoring to Operational Excellence.
Compliant	Fairness	Ethical standards, AI fairness, accessibility, and privacy rights. Legal adherence and data residency stay in Trust.

Sub-Pillar	Now Most Addressed In	Notes
Intentional	Operational Excellence	Strategy, prioritization, and governance. Maintainability and readability live in Resource and Cost Optimization.
Automated	Operational Excellence	Process design and data integrity. Query mechanics and business-value/ROI move to Resource and Cost Optimization; bulkification serves scalability in Reliability and resource efficiency in R&CO.
Engaging	Fairness	Equity-relevant UX — form-factor/device equivalence, forms cognitive load, deliberate in-app guidance — is in Fairness.

Sub-Pillar	Now Most Addressed In	Notes
Resilient	Operational Excellence	Application lifecycle management, operational incident response. Disaster recovery/continuity moves to Reliability; security-incident response to Trust.
Composable	Resource and Cost Optimization	Separation of concerns and architecture efficiency. Messaging/eventing and API management live in Integration Patterns; packaging in Operational Excellence.

“Now Most Addressed In” is the single file where the bulk of that sub-pillar’s guidance now lives — the best first click. It’s not the only place the topic appears.
Splits are called out in Notes when a sub-pillar was deliberately divided across pillars (for example, Legal Adherence: infrastructure/security in Trust, personal rights in Fairness).
Engaging (Streamlined and Helpful) contributes its equity-relevant guidance to Fairness (responsive/form-factor equivalence, forms cognitive load, and deliberate in-app guidance).